#include <iostream>
#include <vector>
using namespace std;

vector<int> mul(vector<int> &A, int b){
    vector<int> C;
    int t=0;
    for(int i=0;i<A.size()||t;i++){
        if(i<A.size()) t+=A[i]*b;
        C.push_back(t%10);
        t /= 10;
    }
    while(C.size() >1 && C.back() == 0) C.pop_back();
    return C;
}

int main(){

    string a;
    int b;
    cin>>a>>b;
    vector<int> A;
    for(int i = a.size()-1; i>=0;i--) A.push_back(a[i] - '0');
    auto C = mul(A,b);
    for( int i = C.size()-1;i>= 0;i--) printf("%d",C[i]);
    return 0;
}
